PDF Viewer is a productivity application that integrates document reading and management.It not only meets your reading needs for PDF, Word, Excel and PPT, but also provides rich document management functions, such as converting images to PDF, setting passwords for PDF, merging PDFs, quickly searching PDFs, etc. ? Comprehensive document manager ●Reader: View files in various formats, including PDF, Word, Excel and PPT files to meet your diverse reading needs. ●Sorting function: In order to meet the organization habits of different users, PDF Viewer provides a variety of sorting methods ●History: Display recently opened files in chronological order so that you can quickly find the required files. ? Convenient PDF tools ● PDF Editor: Highlight, underline, strikethrough text or doodle on your PDFs. ● Lock PDF：Set Passwords to Protect PDF documents. ● Merge PDF: Merge multiple PDF files into one. ● Split PDF：Split a PDF file into multiple PDFs. ● Search PDF files by keywords...